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| Common names: mako (English), marrajo (Espanol), tiburón (Espanol) |
Isurus paucus Guitart Manday, 1966
Body slender, fusiform; eye relatively large; snout relatively short, bluntly pointed; nostrils on side of snout; teeth long, narrow, not serrated, relatively straight; 5 long gill slits, all before pectoral; origin of first dorsal fin a little behind pectoral; second dorsal and anal fins very small, origin of anal under end of base of second dorsal; pectorals very long, longer than head, tip bluntly pointed; tail almost symmetrical, semilunar; tail base flattened, with large keel that extends onto tail fin.
Back and sides intense blue; belly white; underside of snout and mouth dusky.
Size: 417 cm.
Habitat: oceanic, inshore when giving birth.
Depth: surface to 760 m.
Southern California to Baja, occurrence between Mexico and Peru likely but there are no verified records.